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Process Equipment and Plant Design

Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Radial
Longitudinal
Compressive
Circumferential tensile

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Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = G
Δp = G2
Δp = G0.5
Δp = 1/G0.6

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Process Equipment and Plant Design
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

l/30th
l/50th
l/5th
l/15th

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

Short (< 2 m) and housed indoor
Tall but empty
Tall (say 30 metres), but is full of liquid
None of these

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Process Equipment and Plant Design
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.

80
45
60
95

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Process Equipment and Plant Design
Bubble cap plate column is

A continuous contactor
Used only for distillation, not for absorption
A differential stage contactor
A finite stage contactor

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